Abstract

Multigate detection of single photons at 1550  nm is achieved by using capacitor-balanced InGaAs∕InP avalanche photodiodes, with which we experimentally demonstrate the efficient discrimination of single-photon timing by counting single-photon clicks and the corresponding afterpulses within the multiple gates. Results show that the technique of multigate detection is a practical method for the single-photon timing information process.

© 2006 Optical Society of America

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